. find those stories, plus all our healthcare reporting this week on our health page. gwen ifill counts down to election day with some interesting campaign numbers, like how many people have already voted. that's gwen's take. find the latest satellite image of hurricane sandy as it whirls up the east coast, plus a slide show of images from the storm so far. on tonight's "need to know", rick karr examines the controversy over new voting rules in the battleground state of florida. >> reporter: that's interstate four down there. the highway cuts the state of florida in half. to the north of it, a majority of floridians vote republican. on the other side, to the south of it, a majority vote democratic. so the balance of political power in florida is here in orlando and in the counties along i-4. you can think of them as being the swing counties in a swing state that could determine the outcome of the election. >> sreenivasan: you can see all of rick karr's story later tonight. look for "need to know" on your pbs station. judy. >> woodruff: and that's the newshour for tonight. on monday, we'